丨 Product Introduction
1. Advanced positioning technology: Based on the UM980 series, it integrates a full system full frequency RTK engine and a Beidou RTK module, which can achieve high-precision positioning even under harsh conditions.
2. Multi system compatibility: It can receive and process signals from multiple satellite navigation systems, with high compatibility and flexibility.
3. Fast positioning response: The four mode joint RTK scheme ensures fast positioning initialization, guaranteeing speed and accuracy.
4. Low noise anti-interference: Industrial grade low-noise RF circuits suppress multipath interference and ensure accurate signal and positioning.
丨 Specification parameters
|
Chip
characteristics
|
chip
|
UM980
|
|
working frequency
|
BDS: B1I B2I B3I B1C B2a B2b
GPS: L1 C/A L1C L2P (Y) L2C L5
GLONASS: L1 L2
Galileo: E1 E5a E5b E6
QZSS: L1 L2 L5 L6
|
|
Receiving channel
|
1408 channel
|
|
Accuracy
|
Single point positioning (RMS)
|
Plane: 1.5m
|
|
Elevation: 2.5m
|
|
DGPS(RMS)
|
Plane: 0.4m
|
|
Elevation: 0.8m
|
|
RTK(RMS)
|
Flat: 0.8cm+1ppm
|
|
Elevation: 1.5cm+1ppm
|
|
Observation accuracy (RMS)
|
BDS
|
GPS
|
GLONASS
|
Galileo
|
|
B1I/B1C/L1C/L1 C/A/E1/G1Pseudo-range
|
10cm
|
10cm
|
10cm
|
10cm
|
|
B1I/B1C/L1C/L1 C/A/E1/G1Carrier Phase
|
1mm
|
1mm
|
1mm
|
1mm
|
|
B3I/L2P(Y)/L2C/G2
Pseudo-range
|
10cm
|
10cm
|
10cm
|
10cm
|
|
B3I/L2P(Y)/L2C/G2
Carrier Phase
|
1mm
|
1mm
|
1mm
|
1mm
|
|
B2I/B2a/B2b/L5/E5a/E5b
Pseudo-range
|
10cm
|
10cm
|
10cm
|
10cm
|
|
B2I/B2a/B2b/L5/E5a/E5b
Carrier Phase
|
1mm
|
1mm
|
1mm
|
1mm
|
|
Time accuracy (RMS)
|
10 ns
|
|
Speed accuracy (RMS)
|
0.03m/s
|
|
Start Time
|
cold boot
|
<10s
|
|
Initialization time
|
<5s (typical value)
|
|
Initialize reliability
|
>99.9%
|
|
output data
|
Baud rate
|
115200bps (default) [Optional: 4800-921600]
|
|
Output interface
|
TTL
|
|
Output Protocol
|
NMEA0183、RTCM 3.3
|
|
update frequency
|
1Hz-20Hz (default 1Hz)
|
|
Differential
data
|
Differential data
|
RTCM 3.3/3.2/3.1/3.0
|
|
Carrier phase output
|
Support, output RAWX statement
|
|
FLASH
|
built-in
|
|
Electrical
specifications
|
working voltage
|
3.3V~5V DC
|
|
power waste
|
<800mW
|
|
Physical
parameters
|
size
|
50*30*3.5mm
|
|
weight
|
11g
|
|
Connector
|
GH1.25mm 4pin*2
|
|
Antenna connector
|
SMA-J straight head (customizable)
|
|
Environment
|
working temperature
|
-35℃-80℃
|
|
Storage temperature
|
-40℃-95℃
|
丨 product mix

Table 1 PIN Functionality
|
NO.
|
Signal Name
|
Signal Description
|
|
CON1
|
VCC
|
Main power input for COM1, 3.0-5.5V
|
|
GND
|
Ground connection for COM1 module
|
|
TXD1
|
Main serial port (COM1) data transmission, outputs NMEA0183 format location results when configured as "mobile station," outputs RTCM2.x/3.x format differential data stream when configured as "reference station
|
|
RXD1
|
Main serial port (COM1) data reception, input port for configuration commands
|
|
CON2
|
VCC
|
Main power input for COM1, 3.0-5.5V
|
|
GND
|
Ground connection for COM2 module
|
|
TXD2
|
COM2 output interface
|
|
RXD2
|
COM2 differential serial port (COM2) data input, only valid when configured as "mobile station," accepts RTCM2.x/3.x format differential data input
|
|
Indicator Light Definitions
|
|
1
|
RTK-STAT
|
RTK positioning indicator light, active high, outputs high level when RTK fixed solution is achieved. Outputs low level for other positioning states or when not positioned.
|
|
2
|
POWER
|
Indicates power supply status.
|
|
3
|
PPS
|
Pulse Per Second (PPS) output, outputs a pulse per second after positioning, light blinks.
|
Table 2 Interface Characteristics
|
No.
|
Name
|
Symbol
|
Min
|
Typical
|
Max
|
Unit
|
|
1
|
Main Power Supply
|
Vcc
|
2.7
|
3.3
|
5.0
|
V
|
|
2
|
RF Port Supply Voltage
|
VRF
|
1.4
|
3.3
|
3.6
|
V
|
|
3
|
Input High Level
|
VIH
|
2.0
|
|
|
V
|
|
4
|
Input Low Level
|
VIL
|
|
|
0.7
|
V
|
|
5
|
Output High Level
|
VOH
|
3.2
|
|
|
V
|
|
6
|
Output Low Level
|
VOL
|
|
|
0.1
|
V
|
|
7
|
Main UART Baud Rate - Baud
|
Baud
|
|
115200
|
|
bps
|
|
8
|
Differential Baud Rate - Baud
|
Baud
|
|
115200
|
|
bps
|
Packaging and Delivery:

DALANG AK361Z Ultra-Compact High-Precision RTK Positioning Module
Ultra-Compact, Cost-Effective, High-Precision GNSS Engine
The DALANG AK361Z module is an ultra-compact, low-cost, low-power, high-performance real-time kinematic (RTK) differential positioning solution based on the UM980 chip. It integrates a full-system, full-frequency RTK engine and Beidou RTK module, delivering centimeter-level accuracy for UAVs, automotive, and surveying applications. The module can be configured as either a rover or a base station, using carrier phase differential technology to eliminate errors and achieve high-precision positioning.
Full-Frequency RTK Engine for Real-Time Positioning
With its full-frequency RTK engine, the AK361Z provides stable and reliable positioning data across various applications. Whether acting as a rover outputting NMEA location results or as a base station broadcasting RTCM differential data streams, this module ensures accurate location information.
Designed for Space-Constrained Integration Applications
Featuring an ultra-compact design (50*30*3.5mm) and weighing only 11g, the AK361Z module is fully compatible with open-source flight control systems like Pixhawk and APM. It is the ideal choice for small UAVs, handheld devices, or other space-sensitive applications.
Reliability in Harsh Environments
With an industrial-grade low-noise RF circuit design, the AK361Z performs excellently in challenging environments, ensuring stable GNSS output under real-world conditions.
Product Advantages
-
UM980 Chip-based with Full-System, Full-Frequency Support
Leveraging the UM980 chip, the module supports multi-system, multi-frequency signals including BDS, GPS, GLONASS, Galileo, and QZSS, enabling real-time centimeter-level positioning.
-
Dual-Mode Flexible Configuration
Operates as either a base station or rover, offering ultimate application flexibility to meet diverse scenario needs.
-
Ultra-Compact Size and Low Power Consumption
The AK361Z boasts an extremely compact design (50*30*3.5mm) and power consumption below 800mW, making it perfect for miniaturized devices and portable applications.
-
High Compatibility and Easy Integration
Fully compatible with mainstream open-source flight control systems, it offers TTL UART interfaces and rich status indicators for easy integration and monitoring.
Need an Ultra-Compact High-Precision Positioning Solution?
Achieve exceptional positioning performance within limited space – choose the DALANG AK361Z GNSS module based on the UM980 chip today.
About Us
DALANG is a dedicated manufacturer of high-performance GNSS modules and RTK positioning solutions, serving industries such as UAV navigation, precision agriculture, and geospatial mapping. With a clear focus on accuracy, reliability, and integration flexibility, we support both standard and custom applications across global markets. Our product lines are engineered to meet the evolving demands of real-time positioning with support for multiple GNSS constellations, including GPS, GLONASS, BDS, and Galileo.
Our production facility spans 2,500㎡ and includes advanced SMT lines, in-house R&D labs, and full functional testing for every unit shipped. With a team of 30+ GNSS engineers, we design and manufacture over 200,000 GNSS receivers and modules annually. Certified to ISO9001:2015, and compliant with CE and RoHS standards, we follow a strict quality assurance process from prototyping through mass production. We also provide firmware updates, system integration support, and full lifecycle product documentation.
Trusted by partners in over 30 countries, DALANG delivers fast, scalable manufacturing with personalized technical support. Our streamlined collaboration model—covering inquiry, consultation, prototyping, and delivery—ensures efficiency from first contact to deployment. Whether you're sourcing off-the-shelf GNSS hardware or launching a customized solution, DALANG is your dependable partner for accurate, cost-effective positioning systems.
FAQ
1. Who are we?
We are DALANG, a specialized manufacturer of GNSS modules and RTK positioning systems based in China, with a focus on high-precision solutions for UAVs, surveying, and smart agriculture.
2. How can we guarantee quality?
All products undergo strict multi-stage quality control, including SMT production, functional testing, and 100% final inspection. We are ISO9001:2015 certified and follow international compliance standards such as CE and RoHS.
3. What can you buy from us?
You can purchase GNSS receivers, RTK modules, base stations, antennas, flight control positioning systems, and other GNSS-related components and accessories.
4. Why should you buy from us not from other suppliers?
We combine strong in-house R&D, flexible OEM/ODM support, industrial-grade quality assurance, and fast global delivery. Our expertise in GNSS RTK ensures stable, accurate, and scalable solutions tailored to your specific use case.
5. What services can we provide?
We offer OEM/ODM customization, technical consulting, firmware support, prototyping, and global after-sales service. Our team works closely with international clients to ensure efficient communication and long-term support.